198111252456312 has 64 divisors (see below), whose sum is σ = 533757705600000. Its totient is φ = 60913736256384.

The previous prime is 198111252456311. The next prime is 198111252456329. The reversal of 198111252456312 is 213654252111891.

198111252456312 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198111252456311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226501312 + ... + 227374287.

It is an arithmetic number, because the mean of its divisors is an integer number (8339964150000).

Almost surely, 2^{198111252456312} is an apocalyptic number.

198111252456312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198111252456312 is an abundant number, since it is smaller than the sum of its proper divisors (335646453143688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198111252456312 is a wasteful number, since it uses less digits than its factorization.

198111252456312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453877020 (or 453877016 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 51.

The spelling of 198111252456312 in words is "one hundred ninety-eight trillion, one hundred eleven billion, two hundred fifty-two million, four hundred fifty-six thousand, three hundred twelve".